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Visar resultat 1 - 5 av 106 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Influence of acid hydrogen peroxide treatment on refining energy and TMP properties

    Författare :Karin Walter; Per Engstrand; Magnus Paulsson; Lennart Salmén; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TMP; Black Spruce; Energy reduction; Hydrogen peroxide; Ferrous sulphate; Refining; Inter-stage treatment; Pulp and paper properties; Fenton´s reagent; Bleaching; Sodium dithionite; Brightness; Metals; Fibre dimensions; Cross-sectional dimensions; Chemical composition; Cellulose and paper engineering; Cellulosa- och pappersteknik;

    Sammanfattning : The potential of using acid hydrogen peroxide under Fenton conditions to lower the electrical energy consumed during the production of Black spruce (Picea mariana) thermomechanical pulp (TMP) was investigated. The chemical system, which consisted of ferrous sulphate, hydrogen peroxide and optionally an enhancer (3,4-dimethoxybenzyl alcohol, ethylenediaminetetraacetic acid or oxalic acid/sodium oxalate), was evaluated as an inter-stage treatment where the primary refiner was used as a mixer. LÄS MER

  3. 2. Dental anxiety among 15-year-olds : Psychosocial factors and oral health

    Författare :Agneta Stenebrand; Ulla Wide Boman; Magnus Hakeberg; Henrik Jansson; Tiril Willumsen; Jönköping University; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Adolescents; cross-sectional; dental anxiety; experiences of dental care; oral health; prevalence; psychosocial factors; Erfarenheter av tandvård; oral hälsa; prevalens; psykosociala faktorer; tandvårdsrädsla; tvärsnittsstudie; ungdomar;

    Sammanfattning : AIM: The overall aim of this thesis was to examine the associations between dental anxiety, experiences of dental care, psychosocial factors and oral health among 15-year-olds, and to analyse changes in the prevalence of dental anxiety over time.MATERIALS AND METHODS: The thesis was based on two cross-sectional epidemiological studies in Jönköping, Sweden. LÄS MER

  4. 3. Future doctors : mental distress during medical education : cross-sectional and longitudinal studies

    Författare :Marie Dahlin; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Medical students; stress; depression; burnout; gender; suicidal ideation; personality;

    Sammanfattning : Medical education is long and stressful and medical students may suffer from mental distress. The aims of this dissertation are threefold; to investigate levels of distress in medical students at one Swedish medical school, to examine gender differences in such distress and to study individual and environmental determinants of distress. LÄS MER

  5. 4. Patient Perspectives brought to the Fore for Diabetes Care : Descriptions as well as Development and Testing of the Diabetes Questionnaire

    Författare :Maria Svedbo Engström; Soffia Gudbjörnsdottir; Janeth Leksell; Katarina Eeg-Olofsson; Unn-Britt Johansson; Margareta Kristensson; Högskolan Dalarna; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Diabetes Mellitus; Patient-Reported Outcome Measures; Qualitative Research; Surveys and Questionnaires; Cross-Sectional Studies; Hälsa och välfärd; Health and Welfare; Diabetes Mellitus; Patient-Reported Outcome Measures; Qualitative Research; Surveys and Questionnaires; Cross-Sectional Studies;

    Sammanfattning : Aim: The overall aims were to describe perspectives of living with diabetes, to develop a patient-reported outcome and experience measure for the Swedish National Diabetes Register, and to initiate the evaluation of evidence of measurement quality for that measure. A further aim was to describe health-related quality of life and to assess its associations with glycaemic control. LÄS MER

  7. 5. Patient empowerment during the transition to adulthood in young persons with chronic conditions

    Författare :Mariela Acuña Mora; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; chronic conditions; cross-sectional study; descriptive review; instrument development; longitudinal research; patient empowerment; transition; young persons;

    Sammanfattning : During the transition to adulthood and adult care young persons with chronic conditions (CCs) are in need of developing the skills necessary to manage their condition, communicate with the healthcare provider, participate in the decision-making process and become autonomous. In order to help them develop such skills, patient empowerment has been suggested as a relevant approach. LÄS MER